Abstract: A clamp (10) for fastening electrical cables in a stacked arrangement is disclosed including a fastening strap (12) and a stacking staple (112). The fastening strap (12) is generally of a standard design but includes oppositely issuing ears (34) extending from the top (14) thereof. The staple (112) includes first and second latching hooks (134) extending downwardly from the opposite ends of the top (114) and generally parallel to but spaced outwardly from legs (124) also extending downwardly from the top (114). The latching hooks (134) are generally elongated Z shaped and include a first portion (146) having the same outer extent as the top (114) and a second portion (148) having an inner extent for slideable receipt on the outer surface (152) of the first portion (146). The second portion (148) includes a hooking aperture (156) for slideable receipt of the latching ear (34).